Kentucky Senator Rand Paul is “not sure” whether he supports the Defense of Marriage Act (DOMA).

The 50-year-old Paul, a self-described libertarian leaning Republican, told Bryan Fischer, spokesman for the Christian conservative American Family Association (AFA), that he feared federal recognition of the legal marriages of gay and lesbian couples would signal the end of the battle over marriage equality in America.

“I believe in traditional marriage,” Paul said during an appearance on Fischer's radio show. “I really don't understand any other kind of marriage. … I just don't think it's good for us to change the definition of that.”

“So what about DOMA?” Fischer asked.

“In Kentucky, you know, we passed a constitutional amendment to say that marriage is between a man and a woman. So I think that is the right of the states and that's where it originates and really I think the federal government shouldn't get involved with telling the states that they can't pass these laws.”

“Now what DOMA does though senator at the federal level is it does define marriage for federal purposes as the union of one man and one woman. Do you support that?”

“You know it's kind of tricky and I'm not sure exactly how I come down on the federalization part,” Paul answered. “I have said before in the past and I continue to maintain that we should try to keep it as a state issue. My fear is that in federalizing it we are going to lose the battle for the whole country and keeping it state by state, which is the way marriage has always been adjudicated, that we'll still have areas that will continue to have traditional marriage. I think we are losing in large areas of the country now. But you know if the urban centers are able to dictate for the rest of the country what our definition on marriage is, I'm a little concerned about that so I've really thought that we ought to keep it as a state issue.” (The video is embedded on this page. Visit our video library for more videos.)

Paul is considered a possible candidate for president in 2016.